Pinking machine



May 6, 1941. w. Tf MAXANT 2,240,996.

PINKING MACHINE Filed Aug. 17, 1958 2 Sheets-Sheet l May 6, 1941. w. 1'.MAxANT PINKING MACHINE FiledAugv. 17, 1958 2'Sheets'-Sheet 2 lll-III xKm, 6

Patented May 6, 1941A narran stares PAT" fr seien' This inventionrelates to an improvement in pinking machines of the type set forth inmy prior patent, No. 1,984,224, granted December 11, 1934,

'Ihe object of this invention is to improve the construction of thepinking machine, as well as its operation, by the provision ofanti-friction bearings. for the cutter spindle and also for the anvilwhich cooperates with the cutter in a pinking machine of this type; theanvil and its bearings are removable from the cradle to facilitatereplacement of any of these parts, the anvil being in the form of aroller having ball bearings journaling the same as a self-containedunit, which may be dropped into a milled opening in `the cradle for easyremovability and cleaning;

guarding the cutter by an extension on the housing which partlysurrounds the periphery of the cutter; providing a stripper whichprevents the cloth from winding around the cutter shaft; providing adouble adjustment for a cloth guide which extends on opposite sides ofthe cutter and may be adjusted to any desired angle and be locked in anadjusted position Without danger of accidental displacement; securingthe cutter on its spindle without a projection on the spindle vthroughthe cutter; and providing a bed plate that may be dropped into astandard sewing machine cut-out and which will enable the pinkingmachine to be applied to the usual sewing machine table and usedtherein.

In carrying out this invention, I have illustrated a preferredembodiment thereof in the accompanying drawings, in which:

Fig. 1 is a perspective view of my improved pinking machine;

Fig. 2 is a vertical sectional view therethrough, parts being inelevation;

Fig., 3 is a perspective view of the cloth stripper, detached;

Fig. 4 is a horizontal sectional View through the housing of the pinkingmachine, approximately on the line 4-4 of Fig. 2, and showing the casingin section and the other parts in plan;

Fig. 5 is a cross sectional view through the tableand cradle,approximately on the line 5 5 of Fig. 2; and

Fig.. 6 is a detail end elevation of a portion of the. housing showingthe stripper therein, parts being in section.

Although my improved pinking machine isvdesigned for mounting on anysuitable table or stand,. it is especially constructed suitable forsupport on a. standard sewing machine table which: is: designated.generally by the` numeral I 1,. withinf the-,usual sewingmachine cutoutof said.- table. 1 `'Ihepinlring machine. comprises a bedplate 2.adaptedto be. seatedupon the sewing machine ,tablefhandiclamps 3 arearrangedatthe underside ofgy the bed plate 2y in position to engageoppositeLsides-,of'` the sewing machine cut-out, as

showng in Fig..1 5,u Each of the` clamps 3 is carried. by a pair` oflugs 4 having slots 5 therein receiving adjusting screws 6 which extendthrough the lugs 4 and into theunderside ofthe ,bed plate 2 hforvsecuring each clamp in an ad- Ajufstedposition'. Upon loosening of theset screws r.I ihthe clamps-5l may be adjusted laterally to differentpositionsto accommodate for diiferent sized cut-outs in varioussewingmachine tables, accordihgto the width of the cut-out or opening therein,andv to securely hold the `pinlring ma chine `within said` cut-out foroperation on the sewing machine: table.

i The bed plate;A carries4 a housing Il which iscast'.integraltherewith, preferably, and which is iip'st'andi'ng'onY thebed plate, with a fly wheel guard. 'at one end thereof.`Jurnaled'.within the. housing 'l is a drive shaft 9.' carryi'nga pulleyI il on the outer end thereof which receives-a. belt II', that may beoperated `from the usual sewing machine drive. The inner` endlofjtliedrive shaft. 9' carries a pinion |25 meshingjwith a gear I`3 on acutter spindle I4" extending lengthwise in the housing 7. The

opposite end portions of the cutter spindle I4 are journaled in cages ofball bearings I5 mounting in the housing 1 for free operation and to',ellininate,wear Orf thespindle. Openings I6 are providedin thehousing.'l' for lubricating the bearings ofthe'shafts 9 and |42 The,l inner endportion ofl the spindle I4 is reducedat' I'If,l on' Which reducedportion is mount* edr the cutter` I'B'which. hasa serrated edge toaccomplish the 'pinking' operation. The length of; the reduced4 portionIT is less than the thicknessr of the `cutter I8, so that said reducedportion `on the spindle dcesjnot project through the cut- The cutter I8operates within a nose guard 20 which is substantially semi-cylindricaland projects lengthwise from the inner end of the housing 1, beingrigidly secured thereto or integral therewith. 'I'his forms an effectiveguard for the cutter against injury to the operator.

A stripper 2| is arranged beside the cutter I8, generally in therelation shown in Figs. 5 and 6, in order to prevent the cloth fromwinding around the cutter spindle I4. The stripper 2l 1s carried by awire frame 22, one end of which is inserted into the inner end of thehousing 1, to which it is secured by a set screw 23.

Also mounted on the bed plate 2 beside the cutter I8 is a double clothguide 24 which extends to opposite sides of the cutter I8, as shown inFig. 4. Each opposite end of the double cloth guide 24 is provided witha lug 25 extending laterally thereof and seated upon the bed plate 2.Each lug 25 has a slot 26 therein receiving a set screw 21 that isthreaded into the bed plate 2 to adjust the cloth guide 24 to anydesired position with respect to the cutter I8. 'Ihus the cloth guidemay be adjusted to different parallel positions toward or away from thecutter I8, or adjusted to any desired angular position with respectthereto, according to the desired angle of cut relative to Vthematerial, and may be effectively locked in such adjusted positionswithout danger of turning therefrom, as Would be the case if locked onlyat one side.

Mounted beneath the bed plate 2 and operating in cooperative relationwith the cutter I8 is an anvil 28 in the form of a roller which projectsthrough an orifice 29 in the bed plate and has its periphery bearingagainst the ,periphery of the cutter I8. The anvil 28 is mounted on ashaft 30 to which it is rigidly secured, and said shaft 30 rotates in apair of ball bearings 3 I each of which is a self-contained and enclosedassembly. The anvil 28 is supported by a cradle 32 having a slot 33therein which receives the anvil 28, and at opposite sides of the slot33 are seats 34 receiving the ball bearing assemblies 3I. The assemblies3l are removably seated in the seats 34 for ready removal therefrom withthe anvil 28, the entire assembly being capable of being lifted out ofthe cradle 32 in order to replace the anvil or any of the ball bearingsor for cleaning of these' parts in a ready and simple manner. The cradle32 is pivotally supported at 35 to a bracket 36 extending downwardlyfrom the underside of the bed plate 2. The opposite end of the cradle 32is seated upon one end of a leaf spring 31 which extends over a pin 38intermediate its ends and on which it is capable of rocking, theopposite end of the leaf spring 31 being engaged by an adjusting screw39 threaded through the bed plate 2. Upon turning down the adjustingscrew 39, the inner end of the leaf spring 31 is turned upward,

resiliently pressing the anvil 28 against the cutter I8.

The operation of the machine will be evident from the foregoingdescription, and from the accompanying drawings. The material is fedtransversely over the bed plate 2' between the anvil 28 and the cutterI8, the latter being driven through its spindle I4, gearings I2-I3,drive shaft 9, pulley I0, and belt II, from the driving mechanism of themachine or the standard sewing machine and the serrated edges of thecutter I8 produce the pinking effect on the cloth. The guide 24 guidesthe material intov and through the machine, serving as a guide on bothsides of the cutter I8 and may be adjusted to any desired position.

It will be evident that either the cutter or the anvil may be drivenpositively and the other operated idly in engagement therewith. Thus theanvil 28 may be mounted on the spindle I4, if desired and be positivelydriven and the cutter be mounted in the cradle 32 in place of the anvil,the operation being otherwise the same.

The term anti-friction is used in the claims to distinguish from a plainsurface friction bearing, even though lubricated, and to deine the typeof bearing unit containing ball-bearings, roller-bearings, and the like.

I claim:

1. In a lpinking machine of the character described, the combination ofa bed plate having a housing, cutting and anvil members having coactingedges arranged substantially at the upper surface of the bed plate, aspindle, a pair of longitudinally spaced sets of ball bearingsjournaling longitudinally spaced portions of said spindle in thehousing, said spindle having an end projecting from said pair of sets ofball bearings and supporting the cutting member on said projecting end,and means for rotating said spindle.

2. In a pinking machine of the character described, the combination ofcutting and anvil members arranged in coacting relation, a cradlereceiving one of said members, supporting means for said cradle forbodily movement of said member toward and from the coacting member, saidcradle having seats therein on opposite sides of said received member,and anti-friction bearing units removably mounted in said seats andjournaling said member.

3. In a pinking machine of the character described, the combination of asupport, a pair of cutting and anvil members mounted for rotary movementand having coacting edges, a cradle pivotally connected with thesupport, means vresiliently urging said cradle upwardly, said'cradlehaving seats in the upper side thereof on the opposite sides of one ofsaid members, a lpair of anti-friction bearing units mounted Iin saidseats and bodily removable therefrom, and a shaft se,- cured to said las-mentioned member and journaled in said anti-friction bearing units.

4. In a pinking machine of the character described, the combination of abed plate, a pair of cutting and anvil members mounted for rotaryvmovement, and having coacting edges approximately at the surface of thebed plate, a cradle pivotally connected with the bed plate fat the underside thereof, means resiliently urging said cradle upwardly toward thebed plate, said cradle having seats in the upper side thereof on theopposite sides of one of said members, a pair of anti-friction bearingunits mounted in said seats and bodily removable therefrom, and `a shaftfixed to the last-mentioned member and Ajournaled in said anti-frictionbearing units.

5; In a pinking machine of ythe character described, tne combination ofa bed plate, a pair of rotary superposed cutting and anvil membershaving coacting edges approximately at the upper surface of the bedplate, means for driving the uppermost one of said members, a cradlepivotally connected With lthe bed plate at the underside thereof landhaving a slot therein receiving the lowermost one of said members, saidcradle having notched seats in the upper side. thereof on opposite sidesof said slot, antiffriction bear.- ing units removably seated in saidnotched seats,

and a shaft fixed to the lowermost member and journaled in said bearingunits for unitary removal therewith from the cradle.

6. In a pinking machine of the character described, the combination of ahousing, cutting and -anvil members, means mounting said members forrotary movement, and an approximately semi-cylindrical nose guardprojecting inwardly directly from the end of .the housing forming acontinuation thereof with .the peripheral surface of said guard inalignment with the peripheral -surface of the housing, said nose guardextending about one of said members and forming a guard therefor.

7. In a pinking machine of the character described, the combination of abed plate, a housing mounted on said bed plate, cutting and anvilmembers having coacting edges approximately at the surface of the bedplate, means mounting said members for rotary movement, and anapproximately semi-cylindrical nose guard projecting inwardly directlyfrom the end of housing forming a continuation thereof with theperipheral surface of said guard in alignment with the peripheralsurface of the housing, said nose guard extending about one of saidmembers and forming a guard therefor.

8. In a pinking machine of the character described, the combination of abed plate, a housing on said bed plate, a spindle journaled in saidhousing and carrying a cutter on the inner end thereof, a stripperextending horizontally behind said cutter, and a wire frame extendingover said spindle behind the cutter below the upper edge thereof andforming a continuation of the stripper with a backturned end engagingsaid housing, and means for rigidly securing said end of the frame tothe housing.

9. In a pinking machine of the character described, the combination of abed plate, coacting rotary cutting and anvil members operativelyarranged with coacting edges thereof approximately at the surface of thebed plate, a cloth guide extending on opposite sides of said memberstransversely of 4the bed plate and mounted thereon, and means connectedwith each opposite end portion of said guide for adjusting theangularity of the guide transversely relative to the rotary members andfor locking said end portions in adjusted Ipositions.

10. In a pinking machine of the character described, the combination ofa bed plate, coacting rotary cutting and anvil members operativelyarranged With coacting edges thereof approximately at the surface of thebed plate, a cloth guide extending on opposite sides of said memberstransversely of .the bed plate and mounted thereon, said cloth guidehaving laterally extending brackets at each opposite end thereof onopposite sides of said members, said brackets being slidabletransversely relative to the members to different parallel and angularpositions of the guide relative thereto, and means for securing saidbrackets to the bed plate in different adjusted positions of the guiderelative thereto.

11. In a pinking machine of the character described, the combination ofa bed plate, cutting and anvil members having coacting edgessubstantially at the surface of the bed plate, a spindle, and a pair oflongitudinally spaced antifriction bearings journaling said spindle,said spindle having an end projecting from said pair of anti-frictionbearings and supporting one of said members on said projecting end.

12. In a pinking machine of the character described, the combination ofa bed plate, cutting and anvil members having coacting edgessubstantially at the upper surface of the bed plate, a cradle mounted onthe bed plate at the under side thereof, and anti-friction bearing unitsjournaling one of the members in the cradle.

13. In a pinking machine of the character described, the combination ofa bed plate, cutting and anvil members having coacting edgesSubstantially at the upper surface of the bed plate, a cradle mounted onthe bed plate at the under side thereof and having transversely spacedseats in the upper side thereof, and anti-friction bearing unitsremovably mounted in said seats and journaling one of the members in thecradle in T. M AXANT.

